Figure 5
From: The Intrinsic Enzyme Activities of the Classic Polyoxometalates

Effects of concentrations of oxidase-like enzymes with OPD as a substrate. (a) H3PMo12O40; (b)H4SiMo12O40; (c)Eu3PMo12O40; (d)H5PMo10V2O40; (e)α-1,2,3-K6H[SiW9V3O34]; (f)H6P2Mo18O62 with TMB as substrates. Conditions: 0.2 mM Na2HPO4-citrate buffer at room temperature for 10 minutes.The error bars represent the standard deviation of three measurements.